Run an exhaust evacuation system. Because of the vacuum created by the exhaust pulse, it typically has the capability of adding horsepower. I had personally done this a while back (maybe 7 years ago on a turbo car) and it opened up around 30 rwhp.

Run an exhaust evacuation system. Because of the vacuum created by the exhaust pulse, it typically has the capability of adding horsepower. I had personally done this a while back (maybe 7 years ago on a turbo car) and it opened up around 30 rwhp.

I traced the root to this hose (see arrow). It seems to come from behind the plenum.

From the pictures I found on another form I realized it's possible to reuse the fittings to tap the catch can into.

yes. Even better is to cap the plastic intake off the SC altogether and just run a line into a vented breather. Yes you will have to empty its contents once in a while but it's always better than re-routing to the intake. Mind you that it also prob wouldn't pass a visual State tech inspection. (having a breather on a closed system)

but alas this is nothing new and is a by product of excess crancase pressure which is in turn exacerbated on cars that run boost.

Quote:

Originally Posted by JFWM3

I'm a little lost on this one too. I wouldn't mind if Roman from ESS or one of the other FI suppliers would chime in. ESS did a lot of testing, and if it was problematic I am sure that they would have come up with something. And FI is used on a lot of OE applications without excessive oil in the intake system.

With excessive oil in the intake system, the catch can approach could be treating the symptom as opposed to the disease. In other words, is there something else causing excessive oil in the intake system, is it a high mileage car with the valve guides starting to wear, or rings etc. causing the issue.

Can a FI kit supplier chime in?

nothing is problematic and all cars experience it to some degree but again emissions compliance primarily dictates routing back into the intake tract. Any boost car will see excess crankcase pressure and this may be a good idea. It is not mandatory and it's not treating a symptom as opposed to curing a disease. It's a by product to the engine cycle. And FYI most OEM turbo cars do suffer from this. Pull any charge piping off and you'll see a little residue on the piping. It's not as big as a deal as I think you make it out to be.

I am reviving this thread because I am in the process of doing some maintenance and I too found some motor oil in my intake.

I was actually in the process of removing the ESS manifold when I noticed trace amounts at the inlet to the manifold, the SC outlet and a significant amount inside the plastic intake pipe. I too believe its coming from the vent lines leading into the intake. And, I too am a little uncomfortable with oil in my intake system.

I did examine the TBs and found no evidence of any oil making it all the way to the TBs. The manifold TB piping was dry to the touch where the inlet to the manifold had some oil residue.

Exmowner, I guess you and I have some things in common. I also noticed you place electrical tape on top of your intake tube where it impacts the drivers side headlight. I further mitigated that issue by cutting off a small area of plastic on the back of the headlight.

I am reviving this thread because I am in the process of doing some maintenance and I too found some motor oil in my intake.

I was actually in the process of removing the ESS manifold when I noticed trace amounts at the inlet to the manifold, the SC outlet and a significant amount inside the plastic intake pipe. I too believe its coming from the vent lines leading into the intake. And, I too am a little uncomfortable with oil in my intake system.

I did examine the TBs and found no evidence of any oil making it all the way to the TBs. The manifold TB piping was dry to the touch where the inlet to the manifold had some oil residue.

Exmowner, I guess you and I have some things in common. I also noticed you place electrical tape on top of your intake tube where it impacts the drivers side headlight. I further mitigated that issue by cutting off a small area of plastic on the back of the headlight.

I am interested if anyone has found a solution.

Are you removing the ess manifold to change the spark plugs? I have to replace mine and I'm worried about re-bleeding the intercooler afterwards. Do you have a trick or suggestion to make sure no air stays in the lines?

As for the oil, I'm keeping an eye on it. I haven't been able to come up with a solution for a catch can and placement...

In regard to the intake tube, I added black tape as when I'm close to full lock my tire rubs the liner. It ended up marking the tube. Now that you shaved a part of the headlight is there more play for the intake tube?

Are you removing the ess manifold to change the spark plugs? I have to replace mine and I'm worried about re-bleeding the intercooler afterwards. Do you have a trick or suggestion to make sure no air stays in the lines?

As for the oil, I'm keeping an eye on it. I haven't been able to come up with a solution for a catch can and placement...

In regard to the intake tube, I added black tape as when I'm close to full lock my tire rubs the liner. It ended up marking the tube. Now that you shaved a part of the headlight is there more play for the intake tube?

Alex

No, doing some tweaking on the ESS kit. I am actually swapping out manifolds.

Re-bleeding/refilling the heat exchanger system is not a big a deal. I have done it twice. Each time I put the key in position 2 (engine not running) and I allow the system to circulate with expansion tank cap off. Its going to be messy though. I have found it difficult to get all the coolant out of the manifold prior to lifting it out of the car. I am not sure there is any other way to do it.

No, doing some tweaking on the ESS kit. I am actually swapping out manifolds.

Re-bleeding/refilling the heat exchanger system is not a big a deal. I have done it twice. Each time I put the key in position 2 (engine not running) and I allow the system to circulate with expansion tank cap off. Its going to be messy though. I have found it difficult to get all the coolant out of the manifold prior to lifting it out of the car. I am not sure there is any other way to do it.

I did a lot of research and I found a thread on bimmerforums that sums up a lot of the "tried" solutions. The thread also shows how common of an issue this is.

To sum it up the solutions:

1. Catch can (but you lose the vaccuum on the crank case from the SC)
2. Exhaust evacuation system (really only works well with a catless exhuast and will require bungs welded into your existing exhaust)
3. Catch can combined with exhaust evacuation system
4. Electric evacuation system (this is the most interesting and is used on 03/04 Mustang Cobras... however, electric pumps tend to fail)
5. Electric evacuation system combined with catch combined with exhaust evacuation system

Heres the moroso exhaust evacuation system. I am already tempted to go catless and I may try this. Our ESS kits connect both crankcase breather valves together and then to the intake via rubber hose. With this kit, we/you may want to run two separate lines to the exhaust.

Heres the moroso exhaust evacuation system. I am already tempted to go catless and I may try this. Our ESS kits connect both crankcase breather valves together and then to the intake via rubber hose. With this kit, we/you may want to run two separate lines to the exhaust.